23:47 CET - Let's finish off today's Tennis Tracker with the moments of the day - as usual, they do not disappoint.
23:35 CET - Some bad news for Holger Rune fans after the Danish teenager had to retire from his game against Gijs Brouwer. The Dutch outsider was a set up and 4-0 up in the second before Rune called it quits.
In Doha, Maria Sakkari and Caroline Garcia went the distance, with the Greek star taking the final set tie break 7-5.
21:21 CET - Jannik Sinner's hot form continues in Rotterdam as he saw off Stefanos Tsitsipas 6-4, 6-3 in an hour and 22 minutes. The Italian, who was the winner in Marseille last week, will now play Stan Wawrinka on Friday. Over in Buenos Aires, home favourite Francisco Cerundolo was imperious against Spaniard Jaume Munar, winning 6-1, 6-2.
19:08 CET - Pegula got past Haddad Maia comfortably, ending the match with a 6-2, 6-2 result. The world number 4 will face the winner between Sakkari and Garcia, who play later tonight to set up the second semi-final.
17:38 CET - Alex De Minaur defeated Maxime Cressy to progress to the Rotterdam Open quarter-final. The Australian will face Grigor Dimitrov on Friday.
Elsewhere, Gauff fell short of a place in the Doha Open semi-finals to Kudermetova. She is set to face Swiatek on Friday.
14:59 CET - As we gear up for the weekend's finals, two early results from Rotterdam is setting up a potentially star-studded matches. Felix Auger-Aliassime (22) was in control over Gregoire Barrere (29), beating the Frenchman 6-4, 6-3.
Soon after, Daniil Medvedev (27) made light work of Botic Van De Zandschulp (27), winning comfortably 6-2, 6-2.
8:34 CET - World number two Carlos Alcaraz (19) ended his near four-month injury layoff with a 6-2 4-6 6-2 win over Laslo Djere (27) at the Argentina Open on Wednesday.
8:30 CET - Mouth-watering contests today in both ATP and WTA as Stefanos Tsitsipas fights for his place in Rotterdam against Jannik Sinner.
Meanwhile in Doha, with Bencic out and world number one Swiatek into the semi-finals by walkover, the competition is only getting more intense as the rest of the quarter-finals are laying out. Maria Sakkari looks for redemption against WTA Finals champion Caroline Garcia.
Beatriz Haddad Maia clashes with Jessica Pegula after teenager Coco Gauff attempts to prove once again that she deserves a seat at the table with a match against Veronika Kudermetova.
